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各位，有没有用CC DEBUGGER的下载口来做按键？比如P2.2，我用来做按键，怎么设置都不成功，是不是不能用这个脚做按键检测？
在非debug模式下，这个引脚是可以用来做GPIO的，你看看有什么地方忘记配置了！
P2DIR (0xFF) – Port 2 Direction and Port 0 Peripheral Priority Control
